New DM-specialized terrain - lolicastle war!?

Mission Object - Attackers : 1 ) Elimination of all enemies 2 ) The murder of the king Defenders : 1 ) Elimination of all enemies 2 ) To save the king

※The key of a room of a royal audience will be given to one of randomly chosen Attacker, only the one with key can kill the king.※When a hero possessing a key dies, it's dropped(meaning Defenders can hold it as well)※You can get into castle via following four routes - 1 ) Main Entrance : shortest, mass HP of a gate2 ) Back Gate : longest but directly reachable to the king's room, low HP3 ) Underground Waterway : No gate, but easy to be counterattacked due to long and tiny route4 ) 1 ladder is given to Attacker force when the round starts. This ladder can make one more route other than 1~3.